harmful
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Harmful environments or substances can worsen your response to an exposure.
From The Wall Street Journal • Jan. 19, 2026
National Office for Harmful Algal Blooms estimated that the United States spends upwards of $50 million annually in costs related to health, fisheries, recreation, tourism and monitoring.
From Salon • Aug. 16, 2025
Harmful bacteria and algae can often spread more easily in warmer seawater, which isn't treated with cleaning chemicals like your local pool.
From BBC • Jul. 11, 2025
Harmful chemicals can be present in the ash in charred neighborhoods, according to experts.
From Los Angeles Times • Jan. 25, 2025
Harmful conditions within schoolrooms and on school grounds will not be neglected where pupils, teachers, school and family physicians, and parents set about to find and to remove the causes of physical defects.
From Civics and Health by Allen, William H.
Vocabulary lists containing harmful
Earth Day
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Unfavorable
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